The brainchild of World Cup mechanic and now Worldwide Sales Director Jonas Mikolayunas, the XCX Chain Retention System has literally been years in the making.

The XCX, has been used by friends and employees of E13 since 2004 and now has been proven at the highest levels of competition right out of the gate. Having won the Men's Elite Silver medal in the 2009 UCI World Championship Cross Country race the XCX is the first chain retention system in the world to podium at a international World Cup XC event.

Best 1x guide on the market - Sep 10, 2013

5 out of 5 stars

Casey N.

Canton, GA

Picked up this guide for a new 1x10 setup. Takes a little bit to get setup properly with the BB spacing, position, etc. But once it's setup, it's butter! Around 300 miles with it thus far and not a single chain drop. After the initial break-in (took me about a ride), it's been quiet as a mouse. In my opinion, it's the best 1x guide on the market.